The Cummins/Onan 6CTA8.3G is an engine rated at 1800 rpm. It powers generator sets from Cummins/Onan, including the 122DGFA, 148DGFB, 150 DGFA and 175 DGFA. It holds 19 L (5.0 gal) of oil and 26 L (6.9 gal) of coolant.
Also known as: 6CTA8.3G, Cummins 6CTA8.3G
Part of the Cummins/Onan 6CTA8.3 engine family — 11 variants share parts & fitment.
| Oil capacity | 19.0 L |
|---|---|
| Coolant capacity | 26.0 L |
| Rated speed | 1800 rpm |
How to read your Cummins/Onan engine serial & model number →
Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan 6CTA8.3G.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Charge air piping | Check | 50 hr | Daily or after 8 hours | |
| Check Coolant Level | Check | 8 hr | Daily | |
| Check Fuel Level | Check | 8 hr | Daily | |
| Check Oil Level | Check | 8 hr | Daily | |
| Coolant level | Check | 8 hr | Daily or after 8 hours | |
| Drain Water from Fuel Filter | Drain | 8 hr | Daily; drain 1 cup or more of fuel to remove water and sediment. | |
| Engine oil level | Check | 8 hr | Daily or after 8 hours | |
| Fuel Filter(s) | Drain | 8 hr | Drain 1 cup or more of fuel to remove water and sediment. Refer to engine operation and maintenance manual for procedure. | |
| Fuel Tanks (water and sediment) | Drain | 8 hr | Drain 1 cup or more of fuel to remove water and sediment. | |
| Fuel level | Check | 8 hr | Daily or after 8 hours | |
| General genset inspection | Inspect | 8 hr | Daily or after 8 hours. Check for oil, fuel, cooling and exhaust system leaks; check exhaust audibly and visually with set running. | |
| Inspect Genset | Check | 8 hr | Check for oil, fuel, cooling and exhaust system leaks. Check exhaust system audibly and visually with set running and repair any leaks immediately. | |
| Inspect Set | Inspect | 8 hr | Daily; check for oil, fuel, cooling, and exhaust system leaks. | |
| Oil Level | Check | 8 hr | Keep oil level near the dipstick high mark without overfilling. | |
| Вентиляционные устройства генератора | Check | 10 hr | 10 часов / еженедельно | |
| Весь агрегат | Test | 10 hr | Включение минимум на час, предпочтительно с нагрузкой 50 %; 10 часов / еженедельно | |
| Подключение вспомогательной клеммной коробки | Check | 10 hr | 10 часов / еженедельно | |
| Уровень охладителя воды | Check | 10 hr | 10 часов / еженедельно | |
| Уровень смазочного масла в двигателе | Check | 10 hr | 10 часов / еженедельно | |
| Уровень топлива | Check | 10 hr | 10 часов / еженедельно | |
| Уровень электролита в батарее | Check | 10 hr | 10 часов / еженедельно | |
| Air Cleaner | Clean | 50 hr | Clean if required. Perform more often in dusty conditions. | |
| Air cleaner (clean if required) | Clean | 50 hr | Weekly or after 50 hours; perform more often in dusty conditions | |
| Battery charging system | Check | 50 hr | Weekly or after 50 hours | |
| Check Anti-freeze and DCA Concentration | Check | 50 hr | Weekly | |
| Check Battery Charging System | Check | 50 hr | Weekly | |
| Check Battery Level and Specific Gravity | Check | 50 hr | Weekly | |
| Check Coolant Heater | Check | 50 hr | Weekly | |
| Check Drive Belt Tension | Check | 50 hr | Weekly; visually check belts for evidence of slippage. | |
| Check Generator Air Outlet | Check | 50 hr | Weekly | |
| Coolant heater | Check | 50 hr | Weekly or after 50 hours | |
| Crankcase Oil | Drain | 50 hr | First service — Break-in: drain and replace the crankcase oil after the first 50 hours of operation on new generator sets. | |
| Crankcase oil | Change | 50 hr | First service — Drain and replace after first 50 hours of operation on new generator sets. | |
| Drain Exhaust Condensate Trap | Drain | 50 hr | Weekly | |
| Drain Water and Sediment from Fuel Tanks | Drain | 50 hr | Weekly; drain 1 cup or more. | |
| Exhaust condensate trap | Drain | 50 hr | Weekly or after 50 hours | |
| Water and sediment from fuel tank | Drain | 50 hr | Weekly or after 50 hours; drain 1 cup or more of fuel to remove water and sediment | |
| Check Air Cleaner (clean if required) | Check | 100 hr | Monthly; clean if required; perform more often in extremely dusty conditions. | |
| Clean Generator Assembly | Clean | 100 hr | Monthly | |
| Radiator hoses for wear and cracks | Inspect | 100 hr | Monthly or after 100 hours |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Clearance | Float switch lift below C-clip stop | 1/8 | inch (3 mm) | |
| Clearance | Overspeed switch magnet-to-fly arm air gap (minimum) | 0.005 | inches (0.13 mm) | |
| Gap | Mechanical overspeed switch air gap between magnet and fly arm (replace switch if less) | 0.005 | inches (0.13 mm) | |
| Other | AVR DROOP preset at factory | five percent droop at full load and zero power factor | ||
| Other | Battery electrolyte corrected specific gravity (fully charged) | 1.260 | electrolyte temperature corrected | |
| Other | Battery electrolyte specific gravity, fully charged (corrected) | 1.260 | corrected to 80 °F (27 °C) | |
| Other | Battery recharge threshold specific gravity | 1.215 | ||
| Other | Battery specific gravity | 1.260 | at 77°F (25°C) | |
| Other | Battery specific gravity temperature correction | four gravity points (0.004) for every ten degrees above 80 F (27 C) | ||
| Other | Battery specific gravity, fully charged | approximately 1.260 | at 80°F (27°C) | |
| Other | Coolant level | 50 | mm | below radiator cap opening |
| Other | Cycle crank crank and rest time | 7 to 20 | seconds | |
| Other | Cycle crank number of cycles | 3, 4, or 5 | ||
| Other | Cycle cranking (12-lamp control) | 3 cycles of 15 seconds | ||
| Other | ECM fuse F1 (starter solenoid circuit) | 20 | amps | |
| Other | ECM fuse F2 (fuel solenoid circuit) | 20 | amps | |
| Other | ECM fuse F3 (continuous B+ to remote circuits) | 15 | amps | |
| Other | ECM fuse F4 (ECM circuits) | 5 | amps | |
| Other | ECM fuse F5 (engine gauge circuits) | 5 | amps | |
| Other | Frequency adjustment range | ±5% | % | genset running |
| Other | Fuse A31-F1 (control B+) | 5 | Amp | Engine Interface board |
| Other | Fuse A31-F3 (auxiliary B+) | 5 | Amp | Engine Interface board; panel lights, run and start relays |
| Other | Fuse A38-F1 (Network B+) | 10 | Amp | Governor Output Module |
| Other | Fuse A38-F2 (Switched B+) | 10 | Amp | Governor Output Module |
| Other | Fuse A38-F3 (Governor B+) | 10 | Amp | Governor Output Module |
| Other | Fuse TB-Bat F1 (Customer B+) | 20 | Amp | Engine Harness Assembly |
| Other | GOV RAMP adjustment range | 0 through 10 | seconds | |
| Other | Governor droop adjustment range | within 5 | percent of nominal frequency (3 Hz for 60Hz sets, 2.5 Hz for 50Hz sets) | |
| Other | Low oil pressure / high engine temperature fault time delay | about 10 | seconds | following starter disconnect and inhibited during cranking |
| Other | Overcrank limit (Sentinel) | 60 | seconds | |
| Other | Overcrank option limit (Detector) | 75 | seconds | |
| Other | Overcrank time limit | 75 | seconds | |
| Other | Overspeed warning range 60 Hz sets | 2000 to 2200 | RPM | |
| Other | REG VHZ adjustment range | 1 through 50 (normal range 7 through 21) | ||
| Other | Random voltage variation | ±1 | % | for constant loads |
| Other | Response jumper setting - 90 to 550 kW | B to C | ||
| Other | Response jumper setting - over 550 kW | A to B | ||
| Other | Response jumper setting - under 90 kW | A to C | ||
| Other | Setup/calibration menu access code | 574 | ||
| Other | Standard cycle cranking (Detector) | three 15-second cranking cycles with two 15-second rest periods | ||
| Other | Start delay adjustment range | 0 to 300 | seconds | remote starting in Auto mode |
| Other | Starter disconnect speed | 450 to 570 | RPM | |
| Other | Stop delay adjustment range | 0 to 600 | seconds | remote stopping in Auto mode |
| Other | Trailer brake shoe adjustment back-off | 10 | clicks | |
| Other | Trailer surge brake actuator stroke length (service brakes if exceeds) | 1 | inch (25 mm) | |
| Other | Under-frequency roll-off (UFRO) threshold, 50 Hz applications | 49 | Hz | |
| Other | Under-frequency roll-off (UFRO) threshold, 60 Hz applications | 59 | Hz | |
| Other | Voltage adjustment range | ±5% | % | genset running |
| Other | Voltage regulation | ±2 | % | from no load to full load |
| Other | Глубина фундамента/цоколя и выступ за пределы агрегата | не менее 150 | мм (6 дюймов) | |
| Other | Минимальное расстояние от генератора до стены, резервуара или панели в машинном зале | 1 | м | |
| Other | Нагрузка на грунт (ННГ) от агрегата, охладителя, топлива и фундамента | менее 9800 | кг/м2 (2000 фунтов на кв. фут) или 96 кПа | требует проверки по местным нормам |
| Other | Площадь впускного отверстия воздуха для агрегатов с радиаторным охлаждением | в 1,5-2 раза больше площади радиатора | ||
| Other | Просвет выхлопной трубы глушителя | 12 | дюйма (300 мм) | двигатель QSK60 |
| Other | Просвет выхлопной трубы глушителя | 3 | дюйма (76 мм) | двигатели B3.3, 4B, 6B |
| Other | Просвет выхлопной трубы глушителя | 4 | дюйма (100 мм) | двигатель 6C |
| Other | Просвет выхлопной трубы глушителя | 6 | дюйма (152 мм) | двигатели L, N, K19, V28 |
| Other | Просвет выхлопной трубы глушителя | 6×2 | дюйма (152 мм) | двигатели K38, QSK30 |
| Other | Просвет выхлопной трубы глушителя | 8 | дюйма (200 мм) | двигатели K50, QSK15 |
| Other | Прочность бетона фундамента на сжатие (28 суток) | не менее 17200 | кПа (2500 фунтов на кв. дюйм) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | soft water/E.G./DCA mixture | Installation review checklist item: cooling system must be filled with soft water/E.G./DCA mixture. | |||
| Coolant | 50/50 mix of water and antifreeze | Balanced coolant mixture of water, antifreeze and coolant additives | Drain and replace the mixture every 6 months or after 500 hours of operation. Do not add cold coolant to a hot engine; allow engine to cool below 120 F (50 C) before adding coolant. | ||
| Coolant | Смесь воды и антифриза 50/50; низкосиликатный антифриз | Добавка Cummins DCA4 или эквивалент | Вода чистая, без хлоридов, сульфатов и кислот, с pH от 8,5 до 10,5; при заполнении холодной системы остается 6 (максимум 8) % дополнительной емкости для расширения | ||
| Engine oil | Refer to Cummins engine Operation and Maintenance Manual for lubricating oil classification | Gensets are shipped with oil added. | |||
| Engine oil | SAE 5W synthetic | API CC/CD; sulphated ash max 1.85%; pour point 9°F (5°C) below lowest expected temperature; viscosity max 10,000 mPa·s at -31°F (-35°C) and min 4.1 mm²/s at 212°F (100°C) | below -23°C | For ambient consistently below -10°F (-23°C) and no engine warm-up provision | |
| Engine oil | 10W-30 | API CC/CD | -23°C to -10°C | For ambient -10°F (-23°C) to 14°F (-10°C) | |
| Engine oil | 15W-40 | API CC/CD | above -10°C | For ambient 14°F (-10°C) and above | |
| Engine oil | 20W-40 | API CC/CD | above 0°C | For ambient 32°F (0°C) and above | |
| Fuel | ASTM No. 2 Diesel | ASTM No. 2 | Cummins engines on DG series sets normally use ASTM No. 2 Diesel; will operate on alternate diesel fuels within engine manual specifications. Never use galvanized or copper fuel lines, fittings or tanks. | ||
| Fuel | Diesel | Do not use zinc coated or copper fuel lines with diesel fuel. | |||
| Fuel | No. 2 diesel | Engine primarily designed for No. 2 diesel; No. 1 fuel or similar acceptable if meets specifications | |||
| Fuel | diesel | Do not use zinc coated or copper fuel lines with diesel fuel. | |||
| Fuel | Дизельное топливо класса А1 или А2 | BS 2869: Часть 1:1998 (класс А1); BS 2869: Часть 2:1998 (классы А2, С1, С2, D, E, F, G, H) | Топливо должно быть как можно более чистым, по возможности не содержать воды и загрязнений | ||
| Hydraulic oil | DOT-3 | Trailer master cylinder reservoir - keep at least half full | |||
| Other | Природный газ | Наименьшая теплопроизводительность >30 МДж/Н·м3; плотность 0,7-0,9 кг/м3; метановое число >52; H2S >0,01 %; максимальная температура газа 50 °C | below 50°C | Требования к качеству газа для газовых двигателей; при несоответствии двигатель должен быть отключен |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 101 | IDLE MODE | Indicates that the engine is operating in idle mode. Grounding the engine idle input inhibits generator build-up and governs the engine at 800 RPM; control lowers oil pressure warning and shutdown trip points accordingly. | Warning | None required; removing ground returns the genset to normal speed and voltage. |
| 102 | EMERGENCY STOP | Indicates local or remote Emergency Stop. | Shutdown | Pull the button out (turn clockwise to allow it to pop out); move Run/Off/Auto switch to Off; press the Reset switch; select Run or Auto as required. Reset only at the PCC front panel. |
| 121 | SPEED SIGNAL LOST | Mag pickup speed indication is not being sensed. | Shutdown | Restart and check RPM on digital display; inspect MPU wires/connector pins; check for 3.5 to 15 VAC at MPU while cranking. |
| 135 | OIL PRESSURE SENSOR H | Engine oil pressure sender signal is shorted high. | Warning | Check sender/connectors/wires; verify fault simulation not enabled; check 0.5 to 4.5 VDC at P7-13 (OP OUT) and P7-17 (OP COM). |
| 141 | OIL PRESSURE SENSOR L | Engine oil pressure sender signal is shorted low. | Warning | Check sender/connectors/wires; check for shorts/open circuits at P7-13, 17, 21. |
| 143 | PRE-LOW OIL PRES | Engine oil pressure dropped to an unacceptable level. | Warning | Check oil level, lines and filters; replenish if low; if powering critical loads wait until next shutdown period and follow code 415. |
| 144 | COOL SENSOR HIGH | Engine coolant temperature signal is shorted high. | Warning | Check sender/connectors/wires; check resistance between P7-30 (IH20) and P7-34 (IH20 COM). |
| 145 | COOL SENSOR LOW | Engine coolant temperature signal is shorted low. | Warning | Check sender/connectors/wires; check for shorts at P7-30 and P7-34. |
| 146 | PRE-HIGH COOL TMP | Engine has begun to overheat (coolant temperature risen to an unacceptable level). | Warning | Reduce load; check air inlets/outlets and remove obstructions to airflow; if engine can be stopped follow code 151. |
| 151 | HIGH COOLANT TEMP | Engine has overheated (coolant temperature above the shutdown trip point). | Shutdown | Allow engine to cool; check coolant level; check airflow obstructions; check fan belt; check blower fan/remote radiator pumps; reset control and restart. |
| 197 | LOW COOLANT LEVEL | Engine coolant level has fallen below the warning trip point. | Warning | Allow engine to cool; check coolant level and replenish; look for leaks; reset control and restart. |
| 200 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped to an unacceptable level. | Warning | If powering critical loads and cannot be shut down, wait until next shutdown period then follow the 201-SHUTDOWN procedure. Check oil pressure via the Oil Pressure menu prior to clearing the fault. |
| 201 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped below the shutdown trip point. | Shutdown | Check oil level, lines and filters; if oil system is OK but oil level is low, replenish; reset control and restart. Oil pressure limits are listed in Table 4-3. |
| 204 | OIL PRES SENDER | Indicates that the control has sensed that the engine oil pressure sender is out of its working range. | Warning | Check that the engine oil pressure sender is properly connected. |
| 210 | LOW COOLANT TEMP | Warning occurs when engine coolant temperature is 70 deg F (21 deg C) or lower while set is not operating. | Warning | Indicates engine coolant heater is not operating or is not circulating coolant; check coolant heater power supply/fuse, low coolant level, and open heater element. |
| 211 | HIGH COOLANT TEMP | Indicates engine coolant temperature is getting close to the recommended maximum (215 deg F/102 deg C standby or 207 deg F/97 deg C prime). | Warning | Reduce load if possible; check air inlets and outlets and remove obstructions to airflow; if engine can be stopped follow the 212-SHUTDOWN procedure. |
| 212 | HIGH COOLANT TEMP | Indicates engine has overheated (coolant above 223 deg F/106 deg C standby or 215 deg F/102 deg C prime). | Shutdown | Allow engine to cool; check for obstructions to cooling airflow, check fan belt, check coolant mixture, check blower fan and circulation pumps; reset control and restart after correcting problem. |
| 213 | COOLANT SENDER | Indicates that the resistance of the coolant temperature sender is out of range. | Warning | Check the resistance of the sender (should be 500 to 2k ohms). |
| 214 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the trip point. | Warning | Allow engine to cool; check coolant level in radiator and recovery bottle and replenish if low; check for possible coolant leakage points. |
| 215 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the shutdown trip point. | Shutdown | Check coolant level in radiator and recovery bottle and replenish if low; check defective coolant bottle hose or radiator cap; reset control and restart after correcting problem. Will not occur in Idle mode. |
| 220 | MAG PICKUP | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | Shutdown | Restart and check RPM on the digital display; isolate per troubleshooting table 4-18. |
| 221 | FAIL TO CRANK | Indicates possible fault with control or starting system. | Shutdown | Check fuse F3 on the Engine Interface board; clean battery cable connections; recharge or replace battery. |
| 222 | OVERCRANK | Indicates possible fuel system problem. | Shutdown | Check for empty fuel tank, fuel leaks, or plugged fuel lines; check for dirty fuel filter and replace; check for dirty or plugged air filter and replace; reset control and restart. |
| 223 | OVERSPEED | Indicates engine has exceeded normal operating speed (115% +/-1% of nominal). | Shutdown | Inspect mechanical fuel linkage; check EFC for binding/damage; monitor PCC duty cycle and replace A32 or A38 as indicated. |
| 224 | FAIL TO SYNCHRONIZE | The generator set has not synchronized to the system bus within the allowable time frame. | Check governor system stability and adjust governing/synchronizer parameters; check for fuel system problems causing engine instability; widen synchronizing window and reduce acceptance time delay. | |
| 226 | FAIL TO CLOSE | Indicates that the paralleling breaker has been given a signal to close, but has not closed properly. | Verify charging mechanism of paralleling breaker; check the close signal to the breaker; verify auxiliary contact signals from the breaker to the control are operational. | |
| 230 | LOW DC VOLTAGE | Indicates battery voltage is below 10 VDC. | Warning | Check battery charger fuse and recharge or replace battery; clean and tighten battery cable connections; check engine DC alternator; check battery charge voltage float level. |
| 231 | HIGH DC VOLTAGE | Indicates battery voltage exceeds 32 VDC. | Warning | Check voltage float level on battery charger (lower float level); check engine DC alternator and replace if normal charging voltage is not obtained. |
| 232 | WEAK BATTERY | Indicates battery voltage drops below 60% of nominal for two seconds during starting. | Warning | Discharged or defective battery; see warning message 230, LOW DC VOLTAGE. |
| 234 | OVERSPEED | Engine has exceeded normal operating speed. | Shutdown | Clear fault and restart genset; check fault threshold; monitor RPM; check electronic governor actuator. |
| 235 | LOW COOLANT LEVEL | Engine coolant level has fallen below the shutdown trip point. | Shutdown | Check coolant level and replenish; look for leaks; reset control and restart. |
| 240 | LOW FUEL-DAY | Indicates day tank fuel supply is running low. | Warning | Check fuel supply and replenish as required. |
| 241 | LOW FUEL | Indicates fuel supply is running low. | Warning | Check fuel supply and replenish as required. |
| 250 | EEPROM ERROR | Indicates PCC memory error - data corruption of critical operating parameters. | Shutdown | Perform initial start setup; turn Run/Off/Auto to Off and reset; if the same EEPROM ERROR message occurs, replace the digital board (A32). |
| 251 | EEPROM ERROR | Indicates PCC memory error - data corruption of noncritical operating parameters. | Warning | Perform adjustment procedures and save; if the same EEPROM ERROR message occurs, replace the digital board (A32). |
| 252 | EEPROM ERROR | Indicates PCC memory error - data corruption of noncritical operating parameters. | Warning | Verify values/choices selected and repeat the save operation; if the same EEPROM ERROR message occurs, replace the digital board (A32). |
| 260 | CUSTOMER FAULT 1 | Customer defined input closed to ground; message is editable. | Isolate the source of the false signal; check A34 LED corresponding to the fault input. | |
| 261 | GROUND FAULT | Customer defined input closed to ground (default message); message is editable. | Isolate the source of the false signal; check A34 LED corresponding to the fault input. | |
| 262 | RUPTURE BASIN (DAY TANK) | Customer defined input closed to ground; message is editable. | Isolate the source of the false signal; check A34 LED corresponding to the fault input. | |
| 263 | HIGH GEN TEMP | Customer defined input closed to ground (default message); message is editable. | Isolate the source of the false signal; check A34 LED corresponding to the fault input. | |
| 270 | PHASE ROTATION | The phase relationship between the generator set and the system bus is not matched. | Shutdown | Using a phase rotation checker, verify that the generator set phase rotation matches the system bus; verify control wiring to the bus PT module is properly connected. |
| 272 | FIRST START | The PowerCommand control is not receiving a proper signal from the system master first start sensor. | Warning | Control reverts to fallback mode; verify the Master First Start Sensor is functioning and that the voltage pulse is present at the PowerCommand control (terminal TB1-50); check interconnection wiring. |
| 301 | HIGH AC VOLTAGE | Indicates that one or more phase voltages has exceeded 130% of nominal, or exceeded 110% of nominal for 10 seconds. | Shutdown | Isolate the regulator module (A37), engine interface board (A31), digital board (A32), PMG/field wiring or PT/CT sensing path per troubleshooting table 4-29. |
| 303 | LOW AC VOLTAGE | Indicates that one or more phase voltages has dropped below 85% of nominal for 10 seconds. | Shutdown | Check PMG or field wiring, rotating rectifier diodes, overload, loose connectors, and voltage sensing circuitry per troubleshooting table 4-30. |
| 313 | UNDER FREQUENCY | Indicates that engine speed has dropped below 90% of nominal for 10 seconds. (Five seconds before shutdown, a Load Dump signal is initiated.) | Shutdown | Check fuel supply, intake air supply and load; check Initial Setup (set size). |
| 320 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Warning | Check load and load lead connections. |
| 321 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated, and a PCC time/current calculation has initiated an overcurrent shutdown. | Shutdown | Check load and load lead connections. |
| 322 | SHORT CIRCUIT | Indicates that generator output current has exceeded 175% of rated. | Shutdown | Check load and load lead connections. |
| 330 | OVERLOAD | Indicates that three-phase power output exceeds 105% of standby (or 115% of prime) rating. | Warning | Check load and load lead connections. |
| 335 | REVERSE POWER | Indicates that power is flowing into the generator set rather than out from the unit. | Shutdown | Verify connection of generator set CT's; verify proper connection of load sharing lines; verify correct frequency and voltage on all sets. |
| 337 | LOSS OF EXCITATION | Indicates that the alternator excitation system is improperly adjusted or has failed. | Shutdown | Check output voltage with calibrated meter and adjust; check load sharing lines; see Section 6 Servicing the Generator. |
| 359 | FAIL TO START | Engine cranks but fails to start (possible fuel system problem). | Shutdown | Check for empty fuel tank, fuel leaks, or plugged fuel lines; replace dirty fuel filter; replace dirty air filter; reset control and restart. |
| 415 | LOW OIL PRESSURE | Engine oil pressure has dropped below the shutdown trip point. | Shutdown | Check oil level, lines and filters; replenish if low; reset control and restart. |
| 421 | OIL TEMP | Engine has begun to overheat (oil temperature above unacceptable level) (Optional). | Warning | Reduce load; check air inlets/outlets; if engine can be stopped follow code 151 and check engine oil level. |
| 441 | LOW BAT VOLTAGE | Battery voltage supply to the control approaching a low level. | Warning | Check battery charger fuse; recharge or replace battery; clean and tighten cable connections; check engine DC alternator. |
| 442 | HIGH BAT VOLTAGE | Battery voltage supply approaching a high level at which control damage can occur. | Warning | Check float level on battery charger; check battery wiring/calibration. |
| 1122 | Rated/Idle Trans | Info | ||
| 1123 | SHUTDOWN AFTER BS | A shutdown fault occurred while Battle Short was enabled and transitioned from enabled to disabled. | Shutdown | Review Fault History and perform corrective action. |
| 1124 | DELAYED SHUTDOWN | A shutdown fault became active while the Delayed Shutdown feature was enabled. | Warning | Review Fault History and perform corrective action. |
| 1131 | BATTLE SHORT ACTIVE | Control is in Battle Short mode (bypasses several critical fault shutdowns). | Warning | None; used for genset operation during emergencies. |
| 1311 | Customer Input #1 | Nature of fault is optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. Programmable via service tool. | ||
| 1311, 1312, 1317, 1318 | CUSTOMER INPUT #1 - #4 | Optional customer-selected fault input is active. | Disconnect signal lead from TB1 and reset the control; check external wiring/active input selection. | |
| 1312 | Customer Input #2 | Nature of fault is optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. Programmable via service tool. | ||
| 1317 | Customer Input #3 | Nature of fault is optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. Programmable via service tool. | ||
| 1318 | Customer Input #4 | Nature of fault is optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. Programmable via service tool. | ||
| 1334 | CRIT SCALER OR | Incorrect feature or calibration was entered into control. | Shutdown | Reload correct feature/calibration file. |
| 1335 | NONCRIT SCALER OR | Incorrect feature or calibration was entered into control. | Warning | Reload correct feature/calibration file. |
| 1337 | No Message | Info | ||
| 1416 | FAIL TO SHUTDOWN | Genset continues to run after receiving shutdown command (Battle Short feature enabled). | Warning | Check Battle Short feature setting. |
| 1417 | POWER DOWN ERROR | Controller cannot power down because of an unknown condition. | Warning | Check for possible battery drain. |
| 1433 | EMERGENCY STOP | Local Emergency Stop. | Shutdown | Pull the button out; move switch to O; press Fault Acknowledge/Reset; select Manual or Auto. |
| 1434 | REMOTE E-STOP | Remote Emergency Stop. | Shutdown | See code 1433 to reset. |
| 1435 | LOW COOLANT TEMP | Engine coolant heater is not operating or not circulating coolant (coolant <=70 F [21 C]). | Warning | Check coolant heater power/fuse/cord; check coolant level; check heater element (10 to 60 ohms); check sensor. |
| 1438 | FAIL TO CRANK | Engine failed to crank after the PCC received a start signal. | Shutdown | Test for B+ at the starter; check fuse F3 (2 Amps); check K4 start pilot relay and starter circuitry; refer to code 121. |
| 1442 | WEAK BATTERY | During cranking battery voltage at or below weak battery trip point. | Warning | Recharge or replace battery; check electrolyte level and connections; check harness. |
| 1443 | BATTERY FAILED | Dead battery - engine will not start. | Shutdown | See code 1438 instructions. |
| 1444 | KW OVERLOAD | Generator output power exceeded 105% of genset rating (3 sec at 110% of rated). | Warning | Check load and load lead connections; check CTs and CT connections. |
| 1445 | SHORT CIRCUIT | Generator output current exceeded 175% of rated. | Shutdown | Check load and load lead connections (fault may not reset for several minutes). |
| 1446 | HIGH AC VOLTAGE | Phase voltage exceeded 130% of nominal, or 110% of nominal for 10 seconds. | Shutdown | Check fault simulation; clear fault and restart; refer to Generator/Base Board Isolation Procedure. |
| 1447 | LOW AC VOLTAGE | Phase voltage dropped below 85% of nominal for 10 seconds. | Shutdown | Check load; reconnect per reconnection diagram; check PMG/field wiring; check P8-21/P8-22 shunt connections. |
Showing the first 80 of 132 codes.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ If Home button or Previous Main Menu button is pressed before pressing save symbol, changes are not saved.
⚠ Selecting this menu resets all operating parameters to default values; perform only by technically qualified personnel.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| AVR response jumper | A to C | For generator output 90 kW or less (SX440 and MX321) | ||
| Auxiliary terminal board TB21 | K1, K2, P2, P3, P4, S2, S1, A2, A1 | A1 and A2 connect a VAR/power factor controller when paralleling with a utility; S1 and S2 connect a droop compensating CT when paralleling with a generator set or utility | ||
| CT1 - U load leads (A phase); CT2 - V load leads (B phase); CT3 - W load leads (C phase) | 6 lead gensets: generator output leads routed through CTs; 12 lead gensets: load wires routed through CTs | 12-lead sets have dual secondary CTs (3 pins); 6-lead sets have single secondary CTs (2 pins) | ||
| Day tank LO SHUTDOWN engine shutdown connection | TB1-14 to engine block ground; TB1-15 to TB2-16 on the ECM | |||
| Fault relay K8/K9 (Dry Contact Module) | K8=Over Crank, Low Oil Pressure, High Engine Temperature, Low Coolant Level, Low Fuel Level; K9=Low Fuel Level, Rupture Basin | Contact ratings: 40A max carry/break N.O. 12V coil, 30A N.C. 12V coil, 20A N.O./10A N.C. 24V coil | ||
| MX321 PMG-excited jumper positions | 2-3, 4-5 and 6-7 | These jumpers must be in these positions | ||
| MX321 voltage regulator frequency jumper | 3-2 for 50 Hz; 3-1 for 60 Hz | |||
| SX440 voltage regulator frequency jumper | C-50 for 50 Hz; C-60 for 60 Hz | |||
| TB3 (ECM alternative RUN/STOP/REMOTE connection) | TB3-1=REMOTE, TB3-2=RUN, TB3-3=STOP | Provides alternative direct connection to ECM for troubleshooting or customer connection | ||
| Voltage trimmer R21 | voltage regulator terminals 1 and 2 | There must be a jumper between terminals 1 and 2 when voltage trimmer R21 is not used | ||
| single phase | QSG-Series power distribution panel voltage selector switch S1 position | main output terminals | Rotary switch under lockable cover selects 120/240 VAC single phase | |
| single phase | Voltage regulator terminal 6 | jumpered to terminal 8 | When the generator is connected for single-phase output, terminal 6 is not connected to the isolation transformer | |
| three phase | QSG-Series power distribution panel voltage selector switch S1 position | main output terminals | Rotary switch selects 120/208 VAC three phase | |
| 110V - 120V L-N | Single phase, 2-wire | Jumper locations for single phase, 2-wire | PTC Module AC wiring (0300-5382-01, -02) | |
| 120 | single phase | Day tank fuel pump control power reconnection | move jumpers from TB1-6/TB1-7 to TB1-5/TB1-6 and TB1-7/TB1-8 | Move selector switch S103 on the control PCB to the up position for 120 V (factory set for 240 V, S103 down) |
| 190, 200, 208, 220, 230, 240, 380, 416, 440, 460, 600 (L-L) | 3 (three phase) | 3 or 4 wires | Voltage Configuration submenu; default = 3Ph 208V 4W | |
| 190V - 240V L-L | Three phase | Jumper locations for three phase, 190V-240V L-L | Use 0300-5382-01 for 190V-240V L-L, 50/60 Hz | |
| 200, 220, 230, 240 (L-L) | 1 (single phase) | 3 wires | Voltage Configuration submenu (Governor/Regulator Setup) | |
| 200V - 240V L-L | Single phase, 3-wire | Jumper locations for single phase, 3-wire | PTC Module AC wiring | |
| 24 | Day tank fuel pump control logic power (two lead harness, no transformer) | TB1-19 to positive (+) 24 V starter motor solenoid; TB-20 to negative (-) | Provides 24 VDC for the control circuit | |
| 240 | single phase | Day tank fuel pump control default factory connection | jumpers between terminals TB1-6 and TB1-7 | Selector switch S103 on the control PCB in the down position for 240 V |
| 380V - 600V L-L | Three phase | Jumper locations for three phase, 380V-600V L-L | Use 0300-5382-02 for 380V-600V L-L, 50/60 Hz |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 140-2241 | Element, Air Cleaner | Air filter |
| 140-2251 | Element, Air Cleaner Secondary (Inner) | Air filter |
| 140-2252 | Element, Air Cleaner - Secondary (Inner) | Air filter |
| 3833680 | Bracket, Air Cleaner | Air filter |
| 3837348 | Cleaner, Air | Air filter |
| 3919520 | Bracket, Air Cleaner | Air filter |
| AC9055-01 | Air Cleaner | Air filter |
| AF4669 | Air Cleaner | Air filter |
| RU5045 | Air Cleaner | Air filter |
| 3016627 | Alternator | Alternator |
| 3016628 | Alternator | Alternator |
| 309-0272 | Regulator, Voltage - 24 VDC (Used on 35 A MP Alternator) | Alternator |
| 309-0561 | Alternator & Drive Components Group Pulley. Alternator - Multi Groove (Use with 35 A MP Alternator) | Alternator |
| 130-3216 | V-belt | Belt |
| 3897933 | Bracket, Belt Guard | Belt |
| 3897934 | Bracket, Belt Guard | Belt |
| 3897937 | Bracket, Belt Guard | Belt |
| 3911560 | Belt, Drive - Alternator | Belt |
| 3911562 | Belt | Belt |
| 3911571 | Belt, Drive - Fan & Altr (6CTA Engine) | Belt |
| 3921633 | Guard, Belt | Belt |
| 3922900 | Tensioner, Belt | Belt |
| 3925697 | Bracket, Belt Tensioner | Belt |
| 130-3536 | Filter, Water - Service | Coolant filter |
| 130-3539 | Filter, Water - Pre-Charging | Coolant filter |
| WF2072 | Coolant Filter | Coolant filter |
| 405-5832 | Door, Housing | Door |
| 3377363 | Lube Oil, Cummins Premium Blue 15W40 (one-gallon jugs) | Fluid |
| V70509 | Lube Oil | Fluid |
| 149-2250 | Filter, Fuel - Primary | Fuel filter |
| 149-2251 | Filter, Fuel - Secondary | Fuel filter |
| 3843760 | Fuel Filter (Fleetguard FS1251 equivalent) | Fuel filter |
| FS1251 | Fuel Filter | Fuel filter |
| 102-1147 | Gasket, Drain-Oil Pan | Gasket |
| 102-1356 | Gasket, Oil Drain | Gasket |
| 3519762 | Gasket, Turbocharger | Gasket |
| 3914303 | Gasket, Gear Housing (Front-Gear-Cover group BP9733-04) | Gasket |
| 3914311 | Gasket, Int Manifold Cover | Gasket |
| 3916300 | Gasket, Turbocharger | Gasket |
| 3917779 | Gasket, Gear Cover (Front-Gear-Cover group BP9733-04) | Gasket |
| 3918779 | Gasket, Connection | Gasket |
| 3921691 | Gasket, Exh Out Connection | Gasket |
| 3931350 | Gasket, Oil Drain | Gasket |
| 3931608 | Gasket, Acc Drive Cover | Gasket |
| 406-0831 | Hinge, Door | Hinge |
| 106334 | Hose, Plain | Hose |
| 210753 | Clamp, Hose | Hose |
| 3025152 | Hose, Plain | Hose |
| 3283227 | Coupling, Plain Hose | Hose |
| 3905084 | Hose, Flexible | Hose |
| 3907167 | Coupling, Plain Hose | Hose |
| 3911875 | Hose, Flexible | Hose |
| 3911880 | Coupling, Elbow Hose | Hose |
| 3912183 | Hose, Plain | Hose |
| 3913724 | Hose, Plain | Hose |
| 3913751 | Hose, Plain | Hose |
| 3916529 | Hose, Plain | Hose |
| 3918163 | Clamp, Hose | Hose |
| 3918521 | Clamp, Hose | Hose |
| 3918607 | Hose, Elbow | Hose |
| 3918611 | Hose, Plain | Hose |
| 3920762 | Hose, Elbow | Hose |
| 3925025 | Hose, Molded | Hose |
| 3931970 | Hose, Plain | Hose |
| 501-0441 | Line, Fuel - Flex (Fuel In) | Hose |
| 503-0197 | Clip, Hose | Hose |
| 503-0365 | Clamp, Hose | Hose |
| 503-0446 | Clamp, Hose | Hose |
| 503-0465 | Clamp, Hose | Hose |
| 503-0685 | Clamp, Hose | Hose |
| 503-1195 | Hose (3/4"ID x 24"LG) | Hose |
| 503-1379-01 | Hose, Radiator | Hose |
| 503-1595 | Hose | Hose |
| 503-1599 | Hose, Radiator | Hose |
| 155-3150-04 | Muffler, Critical | Muffler |
| 502-0047 | Nipple, Pipe (1/4) | Nipple |
| 122-0756 | Element - Oil Filter | Oil filter |
| 3318853 | Combination Full-Flow/Bypass Lubricating Oil Filter | Oil filter |
| LF9009 | Lube Filter | Oil filter |
| 102-1237 | Adapter, Drain-Oil | Service part / kit |
| 102483 | End, Control Rod | Service part / kit |
| 108722 | Clip | Service part / kit |
| 127007 | Screw, Pan Head Cap | Service part / kit |
| 130-3212 | Advanced Efficiency Hydraulic/Transmission Filter | Service part / kit |
| 140-1260 | Fitting, Safety Filter | Service part / kit |
| 140-1548 | Indicator, Service | Service part / kit |
| 140-2240 | Cleaner, Air (Incl Element) | Service part / kit |
| 140332 | Clamp, T Bolt | Service part / kit |
| 146159 | Washer, Plain | Service part / kit |
| 146160 | Washer, Plain | Service part / kit |
| 155-2307 | Silencer | Service part / kit |
| 180371 | Clip | Service part / kit |
| 203555 | Connection, Exhaust Outlet | Service part / kit |
| 204991 | Washer, Plain | Service part / kit |
| 213365 | Screw, Hexagon Head Cap | Service part / kit |
| 3007636 | Plug, Expansion | Service part / kit |
| 3008468 | Plug, Pipe 1/2 NPT | Service part / kit |
| 3010596 | Screw, Captive Washer Cap | Service part / kit |
| 3018006 | Screw, Hexagon Head Cap | Service part / kit |
| 3026910 | Cable | Service part / kit |
| 3028870 | Connection, Tur Oil Inlet | Service part / kit |
| 3030871 | Gauge, Pressure | Service part / kit |
| 3030872 | Gauge, Temperature | Service part / kit |
| 3031348 | Flange, Power Takeoff | Service part / kit |
| 3031643 | Rectifier | Service part / kit |
| 3032105 | Bearing, Ball | Service part / kit |
| 3033379 | Control, Vernier | Service part / kit |
| 3033800 | Washer, Plain | Service part / kit |
| 3035083 | Isolator, Vibration | Service part / kit |
| 3035084 | Isolator, Vibration | Service part / kit |
| 3039554 | Switch, Push Button | Service part / kit |
| 3039570 | Ammeter | Service part / kit |
| 3049554 | Hourmeter & Tachometer | Service part / kit |
| 3050323 | Speed Switch, Electronic | Service part / kit |
| 309-0553 | Switch, Temperature-Pre Water | Service part / kit |
| 309-0554 | SWITCH WATER | Service part / kit |
| 3175239 | Nut, Lock | Service part / kit |
| 3284244 | Connector, Female | Service part / kit |
| 332-1473 | Lug, Solderless | Service part / kit |
| 3393823 | Bolt, Carriage | Service part / kit |
| 3885910 | Red Paint, Spray can | Service part / kit |
| 3900629 | Screw, Hex Flange Head Cap | Service part / kit |
| 3900630 | Screw, Hex Flange Head Cap | Service part / kit |
| 3900631 | Screw, Hex Flange Head Cap | Service part / kit |
| 3900632 | Screw, Hex Flange Head Cap | Service part / kit |
| 3900633 | Screw, Hex Flange Head Cap | Service part / kit |
| 3901249 | Screw, Hex Flange Head Cap | Service part / kit |
| 3901757 | Screw, Hex Flange Head Cap | Service part / kit |
| 3902115 | Screw, Hex Flange Head Cap M12 x 1.75 x 65 | Service part / kit |
| 3902468 | Cap, Filler | Service part / kit |
| 3902662 | Nut, Hexagon Flange | Service part / kit |
| 3903463 | Cover, Access Hole | Service part / kit |
| 3903990 | Screw, Hex Flange Head Cap | Service part / kit |
| 3904971 | Connection Water Transfer | Service part / kit |
| 3905156 | Shim A/R 1.00 mm Thick | Service part / kit |
| 3905157 | Shim A/R 1.04 mm Thick | Service part / kit |
| 3905158 | Shim A/R 1.08 mm Thick | Service part / kit |
| 3905159 | Shim A/R 1.10 mm Thick | Service part / kit |
| 3905160 | Shim A/R 1.14 mm Thick | Service part / kit |
| 3905161 | Shim A/R 1.18 mm Thick | Service part / kit |
| 3905162 | Shim A/R 1.20 mm Thick | Service part / kit |
| 3905163 | Shim A/R 1.24 mm Thick | Service part / kit |
| 3905164 | Shim A/R 1.28 mm Thick | Service part / kit |
| 3905165 | Shim A/R 1.30 mm Thick | Service part / kit |
| 3905166 | Shim A/R 1.34 mm Thick | Service part / kit |
| 3905167 | Shim A/R 1.38 mm Thick | Service part / kit |
| 3905168 | Shim A/R 1.40 mm Thick | Service part / kit |
| 3905169 | Shim A/R 1.44 mm Thick | Service part / kit |
| 3905170 | Shim A/R 1.48 mm Thick | Service part / kit |
| 3905171 | Shim A/R 1.50 mm Thick | Service part / kit |
| 3905172 | Shim A/R 1.54 mm Thick | Service part / kit |
| 3905173 | Shim A/R 1.58 mm Thick | Service part / kit |
| 3905174 | Shim A/R 1.60 mm Thick | Service part / kit |
| 3905175 | Shim A/R 1.64 mm Thick | Service part / kit |
| 3905176 | Shim A/R 1.68 mm Thick | Service part / kit |
| 3905177 | Shim A/R 1.70 mm Thick | Service part / kit |
| 3905178 | Shim A/R 1.74 mm Thick | Service part / kit |
| 3905180 | Shim A/R 1.78 mm Thick | Service part / kit |
| 3905181 | Shim A/R 1.80 mm Thick | Service part / kit |
| 3905182 | Shim A/R 1.84 mm Thick | Service part / kit |
| 3905183 | Shim A/R 1.88 mm Thick | Service part / kit |
| 3905184 | Shim A/R 1.90 mm Thick | Service part / kit |
| 3905185 | Shim A/R 1.94 mm Thick | Service part / kit |
| 3905186 | Shim A/R 1.98 mm Thick | Service part / kit |
| 3906436 | Tube, Water Inlet | Service part / kit |
| 3906439 | Plate, Clamping | Service part / kit |
| 3906619 | Plug, Pipe | Service part / kit |
| 3906715 | Screw, Hex Flange Head Cap | Service part / kit |
| 3906733 | Screw, Hex Flange Head Cap | Service part / kit |
| 3907978 | Stud M10 x 1.50(Both Ends) x 50 | Service part / kit |
| 3908402 | Tube, Water Outlet | Service part / kit |
| 3910901 | Screw, Hex Flange Head Cap | Service part / kit |
| 3911670 | Manifold, Exhaust | Service part / kit |
| 3912151 | Plate, Clamping | Service part / kit |
| 3912159 | Connection, Water Outlet | Service part / kit |
| 3914502 | Aftercooler | Service part / kit |
| 3914868 | Plate, Cover | Service part / kit |
| 3915772 | Seal, Rectangular Ring (Front-Gear-Cover group BP9733-04) | Service part / kit |
| 3916326 | Connection, Exhaust Outlet | Service part / kit |
| 3916518 | Screw, Hex Flange Head Cap M10 x 1.50 x 125 | Service part / kit |
| 3916585 | Screw, Hexagon Head Cap | Service part / kit |
| 3917394 | Connection, Water Transfer | Service part / kit |
| 3918109 | Screw, Hex Flange Head Cap M8 x 1.25 x 25 | Service part / kit |
| 3918192 | Washer, Sealing | Service part / kit |
| 3918498 | Screw, Hex Flange Head Cap M10 x 1.50 x 145 | Service part / kit |
| 3918500 | Tube, Air | Service part / kit |
| 3918542 | Spacer, Mounting | Service part / kit |
| 3918927 | Connection Water Transfer | Service part / kit |
| 3919461 | Block, Terminal | Service part / kit |
| 3919462 | Harness, Wiring | Service part / kit |
| 3919465 | Cabinet, Instrument | Service part / kit |
| 3919467 | Decal | Service part / kit |
| 3919563 | Tube, Water Transfer | Service part / kit |
| 3919577 | Heater, Engine | Service part / kit |
| 3919578 | Panel, Instrument | Service part / kit |
| 3919585 | Panel, Eng Instrumentation | Service part / kit |
| 3919687 | Connector, Female | Service part / kit |
| 3919748 | Dataplate | Service part / kit |
| 3919750 | Brace, Exh Out Connection | Service part / kit |
| 3919751 | Shield, Heat | Service part / kit |
| 3919814 | Connection, Tur Oil Drain | Service part / kit |
| 3919815 | Tube, Tur Oil Drain | Service part / kit |
| 3919871 | Bracket, Cable | Service part / kit |
| 3921533 | Shield, Dust | Service part / kit |
| 3921724 | Tag, Identification | Service part / kit |
| 3923360 | Plate, Clamping | Service part / kit |
| 3924389 | Washer, Sealing | Service part / kit |
| 3924798 | Shaft, Idler | Service part / kit |
| 3925186 | Screw, Flat Head Cap | Service part / kit |
| 3925568 | Damper, Vibration | Service part / kit |
| 3925749 | Connector, Banjo | Service part / kit |
| 3925883 | Screw, Hex Flange Head Cap | Service part / kit |
| 3926125 | Screw, Hexagon Head Cap | Service part / kit |
| 3926901 | Pulley, Idler | Service part / kit |
| 3930678 | Tube, Vent | Service part / kit |
| 3930903 | Cover, Valve | Service part / kit |
| 3931827 | Tube, Tur Oil Drain | Service part / kit |
| 402-0030 | Part 402-0030 | Service part / kit |
| 41320-D | Shaft, Stub | Service part / kit |
| 416-0444 | Cable, Battery - Negative | Service part / kit |
| 416-0619 | Cable, Battery | Service part / kit |
| 501-0480 | Line, Fuel - Flex (Fuel Out) | Service part / kit |
| 504-0011 | Valve, Shutoff (1/2”) | Service part / kit |
| 505-0021 | Bushing, Pipe - Reducer (3/4º to 1/2º) | Service part / kit |
| 505-0050 | Elbow, Street (1/2' x 90 ° ) | Service part / kit |
| 505-0185 | Nipple, Half (1/2' x 1.5' lg) | Service part / kit |
| 508-0015 | Washer, Insulating - Fiber (#8) | Service part / kit |
| 508-0231 | Bumper Switch, Selector | Service part / kit |
| 526-0003 | #Washer, Flat (#8) | Service part / kit |
| 526-0008 | 148-036’? | Service part / kit |
| 526-0219 | Washer, Flat (1/2) | Service part / kit |
| 526-2140 | Washer, Flat (M12) | Service part / kit |
| 554802 | Washer, Plain | Service part / kit |
| 5818824 | Nut, Hexagon Flange M10 x 1.50 | Service part / kit |
| 62399-N | Key, Square | Service part / kit |
| 70208 | Screw, Pan Head | Service part / kit |
| 800-0008 | Screw, Cap - Hex Head (1/'4-2Ox 1-1/4') | Service part / kit |
| 800-0026 | Screw, Cap - Hex Head (5/16-18 X 3/4') | Service part / kit |
| 800-0091 | Part 800-0091 | Service part / kit |
| 800-0520 | Screw, Cap - Hex Head - Self Locking 3/4-10 x 1" | Service part / kit |
| 800-2058 | Screw, Cap - Hex Head (M8 x 1.25 x 25) | Service part / kit |
| 800-2088 | Screw, Cap - Hex Head | Service part / kit |
| 800-2110 | Hood, Inlet - Air Molded | Service part / kit |
| 800-2111 | Screw, Cap - Hex Head (M12 x 1.25 x 25mm) | Service part / kit |
| 809-0035 | Screw, Machine - Thread Cutting, Round Head (#8 X 3/4') | Service part / kit |
| 815-0172 | Cover, Adapter Outlet | Service part / kit |
| 818-0150 | Rivet | Service part / kit |
| 821-0014 | 2 821-0018 1 3 526-0018 2 4 856-0006 1 5 870-0212 1 6 NOTE 1 REF 7 NOTE 1 REF 8 NOTE 1 | Service part / kit |
| 821-0018 | Screw, Self-locking - Hex Washer Head ( 1'4.20 x 5 8') | Service part / kit |
| 821-0029 | Screw, Self–Locking – Hex Washer Head (3/8–16 x 3/4") | Service part / kit |
| 821-6003-02 | Screw, Cap - Hex Head (M8 x 1.25 x 25mm) | Service part / kit |
| 850-0030 | Washer, Lock - Spring (#10) | Service part / kit |
| 850-0060 | Screw, Cap - Hex Head (5/16-18 X 7-1/2" ) | Service part / kit |
| 850-2005 | Washer, Lock - Spring (M5) | Service part / kit |
| 850-2008 | Washer, Lock (M8) | Service part / kit |
| 850-2010 | Lock | Service part / kit |
| 850-2012 | Washer, Lock - Spring (M12) | Service part / kit |
| 856-0008 | Washer, Lock - EIT (5/16'1) | Service part / kit |
| 856-0013 | Washer, Lock - W/EIT (1/2) | Service part / kit |
| 860-2006 | Genset component (SJB series) | Service part / kit |
| 862-0004 | 4 ttNut, Hex - Set Mounting - Key 2 HARDWARE SET, SET MOUNTING | Service part / kit |
| 862-0016 | Nut, Hex | Service part / kit |
| 863-0002 | Cleaner, Air (Includes Element) | Service part / kit |
| 870-0048 | Nut, Self-locking - Hex (5/16-18) | Service part / kit |
| 870-0053 | Nut, Hex (s10-32) | Service part / kit |
| 870-0196 | Nut, Insulating (#8) | Service part / kit |
| 870-0212 | Nut, Locking (1/4-20) | Service part / kit |
| 870-0257 | Nut, Locking (5/16−18) * − Parts Used On Heat Exchanger Installations With Automatic Water Regulator # − Cut Off And Discard Swivel Connector End Of Hose So That 1/8 NPT Connector End Measures Length As Indicated Above + − Parts Used On Heat Exchanger Installations Without Automatic Water Regulator | Service part / kit |
| 870-0281 | Nut, Self-Locking – Hex Washer Head (3/8–16) | Service part / kit |
| 871-0010 | Nut, Hex - Srass (#10-32) Washer, Lock - EIT (#10) Washer, Lock - IT (#10) | Service part / kit |
| S-1008-1 | Connector, Female | Service part / kit |
| S-103-D | Screw, Hexagon Head Cap | Service part / kit |
| S-114 | Screw, Hexagon Head Cap 1/4 - 20 X 3/4 Inch. | Service part / kit |
| S-115 | Screw, Hexagon Head Cap | Service part / kit |
| S-118 | Screw, Hexagon Head Cap | Service part / kit |
| S-118-A | Screw, Hexagon Head Cap | Service part / kit |
| S-168-C | Screw, Hexagon Head Cap | Service part / kit |
| S-224 | Nut, Heavy Hexagon | Service part / kit |
| S-225 | Nut, Heavy Hexagon Jam | Service part / kit |
| S-257 | Nut, Regular Hexagon | Service part / kit |
| S-511 | Pin, Cotter | Service part / kit |
| S-600 | Washer, Lock 1/4 inch | Service part / kit |
| S-608 | Washer, Lock | Service part / kit |
| S-622 | Washer, Plain 3/8 inch | Service part / kit |
| S-907-B | Union, Plain Female | Service part / kit |
| S-920 | Nipple, Plain Pipe | Service part / kit |
| S-960 | Tee, Female Pipe | Service part / kit |
| S-962-E | Draincock | Service part / kit |
| 405-5908 | Panel, Side - Radiator Housing | Panel |
| 405-5917 | Panel, End - Roof | Panel |
| 155-3164-01 | Pipe, Exhaust | Pipe |
| 405-5744 | Post, Housing - Center | Post |
| 405-5916 | Post, Corner - Housing | Post |
| 3802975 | Pump, Water | Pump |
| 3929614 | Pump, Water | Pump |
| 145530 | Seal, O Ring | Seal |
| 3819725 | Clamp, Hose | Seal |
| 3902089 | Seal, O Ring | Seal |
| 3902466 | Seal, Rectangular Ring | Seal |
| 3903475 | Seal, Rectangular Ring | Seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Cummins/Onan 6CTA8.3G engine has an oil capacity of 19.0 liters.
The Cummins/Onan 6CTA8.3G powers 6 generator set(s), including Cummins/Onan 122DGFA, Cummins/Onan 148DGFB, Cummins/Onan 150 DGFA, Cummins/Onan 175 DGFA, Cummins/Onan DGFA.
A commonly reported issue on generators using the Cummins/Onan 6CTA8.3G is: Engine will not crank. Cause: Fault lamp on. Fix: Correct fault and reset control..